Huai'an Approves First 'Passive House'
On May 7, the Housing and Urban-Rural Development Department of Huai'an City announced that the first passive house project of the city passed acceptance inspection, with the comprehensive energy efficiency expected to reach 85 percent.
The passive house, also known as passive ultra-low energy building, is originated from Germany. Thanks to energy-saving design, heat-retaining and air-tightness properties, the house's the energy exchange system can collect and recycle heat from different sources, such as the sunlight, under-floor heating and household electronic appliances, and even from human bodies. As a result, the house's indoor temperature can maintain above 20 degrees centigrade while heat loss of the building can be minimized.
In Germany, the passive house generally consumes just 10 percent of external-source energy used by common houses.